This question is about cells - AQA - GCSE Biology - Question 1 - 2021 - Paper 1
Question 1
This question is about cells.
1.1 Which diagram shows oxygen moving by diffusion?
Tick (✓) one box.
Cell
Directi... show full transcript
Worked Solution & Example Answer:This question is about cells - AQA - GCSE Biology - Question 1 - 2021 - Paper 1
Step 1
Which diagram shows oxygen moving by diffusion?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct diagram is the first one, which shows oxygen moving into the cell by diffusion as indicated by the direction of movement arrows.
Step 2
Complete the sentences.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Plant cells absorb substances from the soil. Water.
Plant cells use osmosis to absorb mineral ions.
Plant cells use active transport to absorb energy.
Active transport moves substances against the concentration gradient and needs energy.
Step 3
Name the type of specialised cell in Figure 1.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The type of specialised cell in Figure 1 is a root hair cell.
Step 4
Describe how the cell in Figure 1 is adapted to increase the absorption of substances from the soil.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The cell in Figure 1 has a large surface area due to its hair-like extensions, which increases the area available for absorption, allowing it to take up more water and nutrients from the soil.
Step 5
Draw one line from each feature to how the feature helps the sperm cell carry out its function.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Contains a nucleus -> To provide the chromosomes for fertilisation.
Has a long tail -> To help the cell to swim to the egg.
